Ryzen 9 7900X vs Core 2 Duo E8400

VS

Aggregate performance score

Core 2 Duo E8400
2008
2 cores / 2 threads, 65 Watt
0.73
Ryzen 9 7900X
2022
12 cores / 24 threads, 170 Watt
32.51
+4353%

Ryzen 9 7900X outperforms Core 2 Duo E8400 by a whopping 4353% based on our aggregate benchmark results.

Primary details

Comparing Core 2 Duo E8400 and Ryzen 9 7900X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking2685124
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorDesktop processor
Power efficiency1.0618.10
Architecture codenameWolfdale (2008−2010)Raphael (Zen4) (2022−2023)
Release date1 January 2008 (16 years ago)27 September 2022 (2 years ago)

Detailed specifications

Core 2 Duo E8400 and Ryzen 9 7900X basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores2 (Dual-core)12 (Dodeca-Core)
Threads224
Base clock speed3 GHz4.7 GHz
Boost clock speed3 GHz5.6 GHz
Bus rate1333 MHzno data
L1 cache64 KB (per core)64K (per core)
L2 cache6 MB (shared)1 MB (per core)
L3 cache0 KB64 MB (shared)
Chip lithography45 nm5 nm
Die size104 mm22x 70 (CCD) mm2 + 122 (I/O) mm2
Maximum core temperatureno data95 °C
Maximum case temperature (TCase)72 °C47 °C
Number of transistors410 millionCCD: 6,5 Mrd + IOD: 3,4 Mrd Million
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier-+
VID voltage range0.85V-1.3625Vno data

Compatibility

Information on Core 2 Duo E8400 and Ryzen 9 7900X compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration11
SocketLGA775AM5
Power consumption (TDP)65 Watt170 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo E8400 and Ryzen 9 7900X. You'll probably need this information if you require some particular technology.

Instruction set extensionsno data5 nm (CCD), 6 nm (I/O) nm, 0.650 - 1.475V
AES-NI-+
AVX-+
Enhanced SpeedStep (EIST)+no data
Turbo Boost Technology-no data
Hyper-Threading Technology-no data
Idle States+no data
Thermal Monitoring+-
Demand Based Switching-no data
FSB parity-no data
Precision Boost 2no data+

Security technologies

Core 2 Duo E8400 and Ryzen 9 7900X technologies aimed at improving security, for example, by protecting against hacks.

TXT+no data
EDB+no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Duo E8400 and Ryzen 9 7900X are enumerated here.

AMD-V-+
VT-d+no data
VT-x+no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo E8400 and Ryzen 9 7900X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1, DDR2, DDR3DDR5-5200

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardOn certain motherboards (Chipset feature)AMD Radeon Graphics (Ryzen 7000)

Peripherals

Specifications and connection of peripherals supported by Core 2 Duo E8400 and Ryzen 9 7900X.

PCIe version2.05.0
PCI Express lanesno data24

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.


Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Core 2 Duo E8400 0.73
Ryzen 9 7900X 32.51
+4353%

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Core 2 Duo E8400 1165
Ryzen 9 7900X 51640
+4333%

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Core 2 Duo E8400 370
Ryzen 9 7900X 2953
+698%

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Core 2 Duo E8400 604
Ryzen 9 7900X 17921
+2867%

Gaming performance

Pros & cons summary


Performance score 0.73 32.51
Recency 1 January 2008 27 September 2022
Physical cores 2 12
Threads 2 24
Chip lithography 45 nm 5 nm
Power consumption (TDP) 65 Watt 170 Watt

Core 2 Duo E8400 has 161.5% lower power consumption.

Ryzen 9 7900X, on the other hand, has a 4353.4% higher aggregate performance score, an age advantage of 14 years, 500% more physical cores and 1100% more threads, and a 800% more advanced lithography process.

The Ryzen 9 7900X is our recommended choice as it beats the Core 2 Duo E8400 in performance tests.


Should you still have questions on choice between Core 2 Duo E8400 and Ryzen 9 7900X, ask them in Comments section, and we shall answer.

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Intel Core 2 Duo E8400
Core 2 Duo E8400
AMD Ryzen 9 7900X
Ryzen 9 7900X

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Community ratings

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Questions & comments

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